EFFECTS OF NONVANISHING ION VISCOSITY ON THE LINEAR-STABILITY OF DRIFT TEARING MODES IN A TOKAMAK

Authors
LAZZARO E LAMPIS G BERNARDINELLO A
Citation
E. Lazzaro et al., EFFECTS OF NONVANISHING ION VISCOSITY ON THE LINEAR-STABILITY OF DRIFT TEARING MODES IN A TOKAMAK, Journal of the Physical Society of Japan, 63(12), 1994, pp. 4373-4378
Citations number
18
Categorie Soggetti
Physics
Journal title
Journal of the Physical Society of Japan → ACNP
ISSN journal
00319015
Volume
63
Issue
12
Year of publication
1994
Pages
4373 - 4378
Database
ISI
SICI code
0031-9015(1994)63:12<4373:EONIVO>2.0.ZU;2-A
Abstract
The inviscid drift tearing modes dispersion relation is a singular lim it of the viscous theory. We show that a finite viscosity leads to dis sipative coupling of branches of the drift tearing mode dispersion rel ation. As a consequence, linear magnetic field reconnection perturbati ons appear. unstable also at large drift frequency. The effects presen t analogies with the theory of the Orr-Sommerfeld equation for viscous fluids. Applicability to edge localized resistive modes in a tokamak is suggested.